On Sep 26, 2009, at 9:43 AM, Yaron Minsky wrote:
> Nice to see everyone up so early on a Saturday morning!
You're late :-]
> Where is 2htdp/universe? I just installed the latest PLT scheme
> release, and I don't see anything called "universe" in the list of
> teachpacks that comes up when I try to add a teachpack.
Use the scrollbar. It's there.
> Anyway, I'm glad to see this getting worked on. I think one of the
> things that Scratch got right is that it provides simple image
> transformations, which turn out to be very useful in constructing
> simple-yet-compelling games. I think having more of this stuff for
> drscheme will make it considerably more compelling for the younguns.
>> y
>> On Sat, Sep 26, 2009 at 9:29 AM, Matthias Felleisen <matthias at ccs.neu.edu> > wrote:
>>> 1. htdp/world is deprecated, use 2htdp/universe instead.
>> 2. we consider the pinhole approach to our image library as a
> mistake. To solve the problem Robby is working on 2htdp/image, a
> replacement for the image library. When it comes out (end of
> semester probably) it will support rotate and other such operations,
> plus comparisons will be much faster.
>> -- Matthias
>>>>>>> On Sep 26, 2009, at 9:17 AM, Yaron Minsky wrote:
>> I'm playing around with the image.ss and world.ss teachpacks, and I
> couldn't figure out how to scale and rotate images. Are there such
> image transformation functions in some other teachpack?
>> y
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